Old S-Section

[Rocks1]

Can anyone tell me where I can find the section properties of an old S24x105. 1918 vintage?
I am only able to find sections that are very close in my historic manual collection (S24x106, S24x104.5, etc.)

 

[TehMightyEngineer]

Have you checked AISC's historic shape database?

That old I am not surprised you can't find accurate section properties; I'd field measure the beam and calculate section properties yourself.

Ian Riley, PE, SE
Professional Engineer (ME, NH, VT, CT, MA, FL) Structural Engineer (IL, HI)

 

[Celt83]

'

from the historic database:

https://www.aisc.org/publications/steel-construction-manual-resources/#37584

Open Source Structural Applications:

https://github.com/buddyd16/Structural-Engineering

 

[canwesteng]

How would you go about measuring the properties of an S-section? The tapered flanges would make it a nightmare.

 

[Ron247]

Following what canwesteng mentioned, does anyone have a detailed drawing or information on the dimensions of S-beams. The tapered flange, lack of toe radius information and where exactly the average flange thickness is applied makes it impossible to make an accurate drawing of an S-shape. Surely there is a profile somewhere. How else would manufacturers know if they are making it within tolerance?

 

[Hokie93]

Interestingly enough, the properties provided by Celt83 match identically with properties provided in the first edition AISC Steel Construction Manual for a 24Ix105.9. The properties also exactly match those for a 24x7 7/8 American Standard beam that weighs 105.9 lb per foot from the 1934 edition of the USS Pocket Companion.

 

[Celt83]

From the 1923 Carnegie Pocket Companion

Open Source Structural Applications:

https://github.com/buddyd16/Structural-Engineering

 

[TehMightyEngineer]

How would you go about measuring the properties of an S-section? The tapered flanges would make it a nightmare.

Use a caliper and measure the thickness at the flange tip and measure a point closer to the web to establish a slope of the tapered flange. Calculate the section properties on the resulting flange shape.

Ian Riley, PE, SE
Professional Engineer (ME, NH, VT, CT, MA, FL) Structural Engineer (IL, HI)

 

[Celt83]

From the Structural Engineers Handbook by Ketchum in 1918:

Open Source Structural Applications:

https://github.com/buddyd16/Structural-Engineering

 

[Ron247]

Thanks all for the more information S-profile information.